metaforce/Runtime/World/CDamageVulnerability.cpp

#include "Runtime/World/CDamageVulnerability.hpp"

namespace urde {

constexpr CDamageVulnerability CDamageVulnerability::sNormalVulnerability(
    EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal,
    EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal,
    EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal,
    EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal,
    EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal,
    EVulnerability::Normal, EVulnerability::Normal, EVulnerability::Normal, EDeflectType::None);

constexpr CDamageVulnerability CDamageVulnerability::sImmuneVulnerability(
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EDeflectType::None);

constexpr CDamageVulnerability CDamageVulnerability::sReflectVulnerability(
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect,
    EVulnerability::Deflect, EVulnerability::Deflect, EVulnerability::Deflect, EDeflectType::One);

constexpr CDamageVulnerability CDamageVulnerability::sPassThroughVulnerability(
    EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough,
    EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough,
    EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough,
    EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough,
    EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough,
    EVulnerability::PassThrough, EVulnerability::PassThrough, EVulnerability::PassThrough, EDeflectType::None);

static constexpr bool is_not_immune(EVulnerability vuln) {
  return vuln != EVulnerability::Immune && vuln != EVulnerability::DirectImmune;
}

static constexpr bool is_normal_or_weak(EVulnerability vuln) {
  return vuln == EVulnerability::Normal || vuln == EVulnerability::Weak;
}

void CDamageVulnerability::ConstructNew(CInputStream& in, int propCount) {
  propCount -= 3;
  EVulnerability* vulns = &x0_power;
  for (int i = 0; i < std::min(propCount, 15); ++i)
    vulns[i] = EVulnerability(in.readUint32Big());

  if (propCount < 15) {
    for (int i = propCount; i < 15; ++i)
      vulns[i] = EVulnerability::Deflect;
  }

  for (int i = 15; i < propCount; ++i)
    in.readUint32Big();

  x5c_deflected = EDeflectType(in.readUint32Big());
  EVulnerability* vulns2 = &x3c_chargedPower;
  in.readUint32Big();
  for (int i = 0; i < 4; ++i)
    vulns2[i] = EVulnerability(in.readUint32Big());

  x60_chargedDeflected = EDeflectType(in.readUint32Big());
  EVulnerability* vulns3 = &x4c_superMissile;
  in.readUint32Big();
  for (int i = 0; i < 4; ++i)
    vulns3[i] = EVulnerability(in.readUint32Big());

  x64_comboDeflected = EDeflectType(in.readUint32Big());
}

CDamageVulnerability::CDamageVulnerability(CInputStream& in) {
  u32 propCount = in.readUint32Big();
  if (propCount == 11) {
    EVulnerability* vulns = &x0_power;
    for (int i = 0; i < 15; ++i)
      vulns[i] = EVulnerability(in.readUint32Big());

    if (propCount == 15)
      x5c_deflected = EDeflectType::None;
    else
      x5c_deflected = EDeflectType(in.readUint32Big());

    x3c_chargedPower = x0_power;
    x4c_superMissile = x0_power;
    x40_chargedIce = x4_ice;
    x50_iceSpreader = x4_ice;
    x44_chargedWave = x8_wave;
    x54_wavebuster = x8_wave;
    x48_chargedPlasma = xc_plasma;
    x58_flamethrower = xc_plasma;
  } else
    ConstructNew(in, propCount);
}

EDeflectType CDamageVulnerability::GetDeflectionType(const CWeaponMode& mode) const {
  if (mode.IsCharged())
    return x60_chargedDeflected;
  if (mode.IsComboed())
    return x64_comboDeflected;
  return x5c_deflected;
}

bool CDamageVulnerability::WeaponHurts(const CWeaponMode& mode, bool ignoreDirect) const {
  if (mode.GetType() == EWeaponType::None || mode.GetType() > EWeaponType::OrangePhazon)
    return false;
  if (mode.IsInstantKill())
    return true;

  EVulnerability normalVuln = (&x0_power)[u32(mode.GetType())];
  bool normalHurts = true;
  if (ignoreDirect) {
    normalHurts = is_normal_or_weak(normalVuln);
  } else {
    if (!is_normal_or_weak(normalVuln) &&
        (normalVuln != EVulnerability::DirectWeak && normalVuln != EVulnerability::DirectNormal))
      normalHurts = false;
  }

  bool chargedHurts = true;
  bool comboedHurts = true;
  if (mode.GetType() < EWeaponType::Bomb) {
    EVulnerability chargedVuln = (&x3c_chargedPower)[u32(mode.GetType())];
    EVulnerability comboedVuln = (&x4c_superMissile)[u32(mode.GetType())];
    if (ignoreDirect) {
      chargedHurts = is_normal_or_weak(chargedVuln);
      comboedHurts = is_normal_or_weak(comboedVuln);
    } else {
      if (!is_normal_or_weak(chargedVuln) &&
          (chargedVuln != EVulnerability::DirectWeak && chargedVuln != EVulnerability::DirectNormal))
        chargedHurts = false;
      if (!is_normal_or_weak(comboedVuln) &&
          (comboedVuln != EVulnerability::DirectWeak && comboedVuln != EVulnerability::DirectNormal))
        comboedHurts = false;
    }
  }

  if (normalHurts && !mode.IsCharged() && !mode.IsComboed())
    return true;
  if (chargedHurts && mode.IsCharged())
    return true;
  return comboedHurts && mode.IsComboed();
}

bool CDamageVulnerability::WeaponHits(const CWeaponMode& mode, bool checkDirect) const {
  if (mode.GetType() == EWeaponType::None || mode.GetType() > EWeaponType::OrangePhazon)
    return false;
  if (mode.IsInstantKill())
    return true;

  bool normalVuln;
  if (!checkDirect)
    normalVuln = (&x0_power)[u32(mode.GetType())] != EVulnerability::Immune;
  else
    normalVuln = is_not_immune((&x0_power)[u32(mode.GetType())]);

  bool chargedVuln = true;
  bool comboedVuln = true;

  if (mode.GetType() < EWeaponType::Bomb) {
    if (!checkDirect) {
      chargedVuln = (&x3c_chargedPower)[u32(mode.GetType())] != EVulnerability::Immune;
      comboedVuln = (&x4c_superMissile)[u32(mode.GetType())] != EVulnerability::Immune;
    } else {
      chargedVuln = is_not_immune((&x3c_chargedPower)[u32(mode.GetType())]);
      comboedVuln = is_not_immune((&x4c_superMissile)[u32(mode.GetType())]);
    }
  }

  if (normalVuln && !mode.IsCharged() && !mode.IsComboed())
    return true;
  if (chargedVuln && mode.IsCharged())
    return true;
  return comboedVuln && mode.IsComboed();
}

EVulnerability CDamageVulnerability::GetVulnerability(const CWeaponMode& mode, bool ignoreDirect) const {
  if (mode.GetType() == EWeaponType::None || mode.GetType() > EWeaponType::OrangePhazon) {
    return EVulnerability::Deflect;
  }

  if (mode.IsInstantKill()) {
    return EVulnerability::Normal;
  }

  EVulnerability vuln = (&x0_power)[u32(mode.GetType())];
  if (mode.IsCharged()) {
    if (mode.GetType() < EWeaponType::Bomb) {
      vuln = (&x3c_chargedPower)[u32(mode.GetType())];
    } else {
      vuln = EVulnerability::Normal;
    }
  }

  if (mode.IsComboed()) {
    if (mode.GetType() < EWeaponType::Bomb) {
      vuln = (&x3c_chargedPower)[u32(mode.GetType())];
    } else {
      vuln = EVulnerability::Normal;
    }
  }

  if (ignoreDirect) {
    return vuln;
  }

  if (vuln == EVulnerability::DirectWeak) {
    return EVulnerability::Weak;
  }
  if (vuln == EVulnerability::DirectNormal) {
    return EVulnerability::Normal;
  }
  if (vuln == EVulnerability::DirectImmune) {
    return EVulnerability::Immune;
  }

  return vuln;
}
} // namespace urde